Or at least part of it. Foreign stocks are a must for a balanced portfolio. Here's our guide to global investing

After this summer's market meltdown and the dollar's fall against the euro, who could blame the weary, wary American investor for seeking shelter overseas? Investing abroad is a logical choice to balance your portfolio. But how much? And where? Time senior writer Daniel Kadlec and reporter Jyoti Thottam asked three top portfolio managers, Gary Bergstrom, chairman of Acadian Asset Management; Barton Biggs, chairman of invest- ment management for Morgan Stanley; and Sarah Ketterer, CEO of Causeway Capital Management. Here are their top picks among overseas markets and some advice on the smartest ways to diversify globally.